XCON: E-Mail Sent to Mail-Enabled Global Group May Disappear (283051)

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Technically, you can use both domain local and global groups to distribute e-mail messages. You can use the Active Directory Users and Computers snap-in to manually create these groups and assign e-mail addresses. However, in multiple-domain environments if the membership of these groups is not replicated to global catalog servers, messages may disappear.

When you use non-universal groups for message distribution, you may experience inconsistent results. For example, on one occasion, expansion may seem to work, but expansion does not occur the next time you attempt it. Because there is no automatic way to check for failed messages, you are strongly recommended to use only universal groups for message distribution when you operate in multiple-domain environments. For single domain organizations, you may use a combination of group types; global catalog servers contain membership of all group objects.